IdStory Identity Manager

After long debugging we found problem place: class EmailCallback method onComplete catch error from asserts. This problem was fixed.

please Radek could you make a review? Thank you.

i merged this fix to hotfix and develop

commit: https://github.com/bcvsolutions/CzechIdMng/commit/3cbb0c5225365503fd23682b8c191c6f76662edc

Notification agenda works, but i was not able to reproduce original behavior. Swallowed exception in camel callback will now be in our log, so we can see, what happens if error occurs.

Same behavior as project may be simulate by using FakeSMTP server locally (thanks HH) (http://nilhcem.com/FakeSMTP/), send message by approve some roles.

add two new tests, tests use fakeSMTP.

commit: https://github.com/bcvsolutions/CzechIdMng/commit/87d8739ff14b766da44e631bb1b06ac3dc5ec1ce

+ commit with test helper: https://github.com/bcvsolutions/CzechIdMng/commit/cbe36f66aa1a72e71c09f31dc5f6ccd685f4469f

Please Radek could you make a review? Thank you. This commit is already merged into hotfix 7.3.5. and develop.

Notification agenda (and sending emails) works, code looks nice (i saw it before merge:)), thx.

Please add note about this asynchronous behavior to doc:
https://wiki.czechidm.com/devel/dev/notification#emailer